Feed-water heater



(No Model.)

C. @ANCIENNE FEED WATER HEATER.

Patented No. 434,319Iv rUNITED- STATES i PATENT OFFICE.

OLEOPHAS OANOIENNE, OF BERTIE, LOUISIANA.

FEED-WATER HEATER.

SPECIFICATION forming part of Letters Patent No. 434,319, dated August 12, 1890.

Application filed May 17, 1890. Serial No. 352,205. (No model.)

My invention is an improvement in feedwater heaters of theclass in which the watersupply pipe passes through the furnace-chamber and then extends upward to connect with the boiler or generator. By my construction and arrangement of parts I provide an unusually large area of heating-surface relative to the quantity of water passing through the supply-pipe, as herein described.

In the accompanying drawings, Figure lis a perspective view (part being broken away) showing the arrangement of a feed-pipe having my improvement applied in connection with a steam-boiler and its furnace-chamber. Fig. 2 is a perspective view of one of the cores that I employ in the feed-pipe. Fig. 3 is a perspective view of one of the caps that close the ends of the corecylinder.

The letter A indicates a boiler' or steamgenerator, which may be of any preferred pattern, and B a mud-drum arranged in the usual way and connected with the boiler by one or more vertical tubes d. Vithin the vfurnace-chamber O, beneath the boiler A, is

arranged a coil 1 of pipe consisting of parallel sections whose ends are connected by a screw-joint with return bends 2. This coil constitutes a portion of the water feed or supply pipe, and the terminals 3 4 of the same project through the opposite side walls of the furnace-chamber, as -shown. With the one terminal 4, I connect the supply-pipe proper 5, and also a blow-off pipe 7, having a check-valve 6 and cock S, respectively. The other terminal 5 of the sectional coil l is connected by pipes 9 and l0 with the muddrum B and the steam-space of the boiler A, respectively. The pipe 9 is provided with a cock 11 and the pipe 10 with a cock 12, as shown. It will be seen that when these cocks 1l 12 are open and the cock 8 of the blowoff pipe 7 is closed, water has free passage past check-valve 6 through the sectional coil 1 to the boiler; but the water becomes heated in the coil -1 and thus partly converted into steam, which separates from it and enters the boiler A through pipe 9, while the unconverted portion passes on to the mud-drum B through pipe l0; but if the cock 8 of blowpipe 7 is opened and cock 12 of the muddrum pipe 10 closed steam will pass through the coil l and blow out the -loose foreign matter or detachable scale that may have aci cumulated therein.

In case of accident,l or when it is requisite for repair or other purpose, the cocks ll and 12 may be closed to completely shut off the passage of water to the boiler.

It will be noted that the sectional coil l is much larger-that is to say, has a much greater diameter than the supply and delivery pipes that connect with it outside thefurnace-Walls, so that it has a correspondingly greater area of heating-surface which is for the most part exposed to the action of the flame and heated gases from the fire-box." In order that the Water passing through the coil lmay be reduced to a thin stratum and kept in contact with the inner sides of the same for the purpose of heating it as quickly and economically as possible, I arrange in each section a detachable or independent core 13, Figs. 2 and 3, which is in this instance a tube having its ends closed by detachable cylindrical caps 14, provided with radial arms or projections l5. The latter serve to support-the cores centrally within the coil-sections, so that a narrow annular space is left between said cores and sections for the passage of water, which is consequently brought into actual contact with or carried in close proximity to the heated surface.

In practice the diameter of the cores 13.

will preferably be at least two-thirds that of the coil-sections. The caps 14 being held on the cores by friction, and being therefore easily detachable, they may be readily applied or removed in the process of setting up or repairing the apparatus.

The cores 13 may easily be removed from the coil-sections 1 for detaching scale or other purpose.

That I claim is- 1. The combination, with the boiler feedpipe located in a furnace-chamber, of the independent loose and removable core con- IOC sisting of a cylinder having closed ends, the same being contained Wholly Within the feedpipe, and suitable means for holding it separated from the latter, whereby a Water-space is left around its sides and beyond its ends, as shown and described.

2. The combination, with a boiler feedpipe arranged in a furnace-chamber, of an independent detachable core having radial arms serving as supports for holding the core centrally in said pipe, as shown and described.

3. The combination, with a boiler feedpipe arranged in the furnace-chamber, of independent detachable cores formed of an opelrended tube and removable capsrhaving radial projections, as and for the purpose specified.

CLEOPHAS CANCIENNE.

Witnesses:

N. E. HOWELL, LAWRENCE H. PUGH. 

